Both my labs wear good quality camo nylon strap type collars. One is Winchester and other is Remington (my dogs are impartial). i have to say, this is something relatively new. For years my hunting dogs always wore choke collars. But I nearly lost my last dog twice to those darn things. We were in a campground at Voyageurs National Park when she was a couple of years old. A nice pup at the next campsite came over and started to play. They were horsing around when the dog slipped his lower jaw underneath Sophie's collar from behind. He spun around trying to get loose only to have the collar simultaneously twist around his jaw and my dogs neck. Sophie was about done for by the time I could get to them. Of course, both dogs were in a panic. I literally had to knock the other poor dog to its knees to get control of the situation and free him from the collar. Pretty scary! Then, several years later in the midst of a terrible cold snap, our dog didn't come back to the door and bark to come in when she finished her business. Must have been nearly two hours before I realized she wasn't in the house or at the door. Poor thing was caught by the collar in the chain link fence behind the garage. Fortunately, no serious damage done even though it was -30.
I'm not a bloody PETA nut or anything like that, but I think that choke collars have seen their day. These things are dangerous and should be banned. When my present older lab was young we went to a pet shop to pick up the usual choke collar and the owner asked us why on earth we'd want one. Told him it was to help keep her from pulling while I was walking her. He laughed and handed me a clunky "spiked" compression type collar and said that's what I needed to walk her. Then handed me a nylon collar and said that's what she needed for ID purposes. I didn't believe him. That spikey thing looked pretty scary. He said I should try it free of charge and then come back. He was confident I'd be happy with it. Boy was he right! The compression collar works wonderfully! No more choking and gagging OR PULLING. Don't let the looks fool you, these things are great for the dogs and for me. A choke collar is downright draconian by comparison (not to mention useless). Pearl will literally jump into hers to go for a walk. Guess it can't be that bad. Of course, these should ONLY be used for walking - DO NOT let the dog run loose in the yard wearing one and do not teather them with it either.
Rolled leather collars are probably easier on dogs hides than nylon which may pull out some hair, especially when they're new. But the rolled leather collars don't last very long in rough use and leather collars can get pretty smelly too. If the nylon collar is leaving a bare spot (usually underside neck) then it's probably too tight. Loosen it a bit and see if that helps. I have one collar that's the old conventional style buckle and the other is a loop adjustable with plastic clip connecter rather than metal buckle. I wssn't terribly impressed with that one but thought I'd give it a go (and it's all the store had at the time). It is intended, I believe, to give way if the dog gets hung up with it. Seems to work fine. My dogs have always had dangling type ID tags. I have wondered how the riveted on name bands work out. Anyone tried them?
Anyway, I hope this thread helps others. Looking forward to your responses.